Please register or login. There are 0 registered and 1197 anonymous users currently online. Current bandwidth usage: 326.30 kbit/s December 17 - 02:43pm EST 
Hardware Analysis
      
Forums Product Prices
  Contents 
 
 

  Latest Topics 
 

More >>
 

    
 
 

  You Are Here: 
 
/ Forums / Power Supply Units /
 

  Power Surge - Computer will not turn on - Little green flashing light 
 
 Author 
 Date Written 
 Tools 
Continue Reading on Page: 1, 2, Next >>
Sheryl Mc Jan 04, 2011, 01:01pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: Jan 04, 2011, 01:05pm EST

Replies: 23 - Views: 81506
We plugged in a space heater to warm up. Part of the electricity went out and we needed to reset the breakers. The computer did not have a surge protector and was plugged directly into the wall. The computer will now not turn on. No signs of life except a little green blinking light located on the back of the tower beside the fan & main plug.

It is expensive to just have the computer looked at and would rather have a little light shed on the problem before forking over mega bucks for a level 1 system recovery if it's not truly needed.

...What steps can I take to check my computer and hopefully save it before having to lug it to the closest computer repair shop?


Want to enjoy fewer advertisements and more features? Click here to become a Hardware Analysis registered user.
G. G. Jan 04, 2011, 02:11pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
first off...... dont do that again... :-)

second..... if you need to plug in a space heater for that room.... plug it into a different socket that is on a different circuit even if you have to run an extention from another room. apparently the circuit that the computer is on is not big enough, wire wise, cicuit breaker, or both to have both the computer and heater at the same time....

and

Thirdly..... look on back of the computer at the power supply, where the AC cord plugs into... is there a on/off switch? If there is.... switch the switch to off... if not... then unplug the cord from the computer.... either way... remove the power source for about 30secs... then replug the cord back in or turn the switch to on.... then hit the power button on the front of the computer to see if it works.



in cases like these, many times, the power supply will have a built in mechanism that when you have a surge... it will power off the supply and hence the computer is down/off... but will not let you power up the system until you remove the power source to reset this built in safety mechanism.

If this does not work... then the power supply is toast. it will need to be replace.



---------------------------------------------------------------------------------------------------------------------

-
Sheryl Mc Jan 04, 2011, 02:51pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: Jan 04, 2011, 02:51pm EST

 
>> Re: Power Surge - Computer will not turn on - Little green flashing light
... ;)

... There is no on/off switch just a little red switch that has 115 and 230. ...?


G. G. Jan 04, 2011, 06:29pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
Dont mess with the little slide votage selector switch....

just unplug the power cord from the power supply ... wait 30sec and retry powering up the system.



---------------------------------------------------------------------------------------------------------------------

-
Sheryl Mc Jan 04, 2011, 06:41pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
Didn't touch it. lol ...Tried your suggestion. Had it unplugged, then waited, and plugged it back in. ...Nothin' :(

That little green light still flashes for awhile even after the computer has no power source.

G. G. Jan 04, 2011, 06:51pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
well... it kinda tells me that the power supply is toast... typically that flashing green LED is supposed to be a solid green......


Just to fore warn you..... but dont be alarmed.... that I am hoping that your other components like hard drive, motherboard, video card and so forth will be ok and that the power supply is the only thing that needs to be replaced..... when you get surges and spikes.... things can happen...


At this point, I say replace the power supply and then see what happens....

But then again.... depending on how old this computer... the money spent on getting a new power supply with a chance that other parts of the computer could be damaged...... could be put towards a new computer...

Best hope is that it will be only the power supply that is bad...


---------------------------------------------------------------------------------------------------------------------

-
Sheryl Mc Jan 04, 2011, 11:41pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
I shall get a new power supply. I think it should cost around $40... ...Not that bad especially if it's all that needs replacing. ...That's almost 1/2 the cost of a diagnostic anyways. ;)
Thanks G.G I'll check it out.


Sheryl Mc Jan 04, 2011, 11:46pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
P.S
How do I know which power supplies are compatible with my computer as it's refurbished?

Body: HP A000
System Number: PJ516AA
Windows XP
Hard Drive: Barracuda 7200.8 300gb Model Number: 8T3300831AS
Power Source: Model Number: ATX-250-12Z

G. G. Jan 05, 2011, 12:01am EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
The power supply is a 250 watt. Just get one that is around 300 watt.l

pull out the old power supply, make note of all the connectors as to what type and where they are connected. There's going to be a 20/24pin that connects to mb, a 4 pin for the cpu, several 4pin molex, a floppy connector..... and then just make sure the new power supply has the connectors you are using. you can take the old power supply to your local computer store and they can match it up.


---------------------------------------------------------------------------------------------------------------------

-
Sheryl Mc Jan 05, 2011, 12:12am EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: Jan 05, 2011, 12:13am EST

 
>> Re: Power Surge - Computer will not turn on - Little green flashing light
I was thinking I could order it online like E-bay or a Computer Source Site.
I'll take photos of where everything is plugged into before unplugging it. ;)
I appreciate your help. :)
Hopefully it is just the power source. *crosses fingers*

john albrich Jan 05, 2011, 12:45am EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light

You might also try a quick CMOS clearing test.

There are times when interrupted power or transients can "glitch" the CMOS contents which can result in completely unpredictable failure modes, including an unresponsive system. Clearing the CMOS and then rebooting can sometimes recover from seemingly hard failures.

Properly done it's extremely low-risk and certainly worth a few minutes of time if it means not having to buy un-needed new hardware and wasting time with uninstalling and reconfiguring hardware.

Under some conditions, you may need to repeat the CMOS clearing process through 2 or 3 additional re-boot attempts. One would think 1 time should always be sufficient, but I've had to do this iteratively on several occasions on different computers before a reboot would complete 100%. It might be different on a motherboard that has "Dual BIOS".

Important Note:
Follow ALL manufacturer instructions to clear the CMOS. It varies from motherboard to motherboard. For example, on my new Gigabyte motherboard (GA-880GMA-UD2H), there is a warning that if you clear the CMOS by the "standard" shorting the jumpers method while the PSU is still powered on, even in quiescent mode (powered-"off" via the front-switch but the back PSU switch still on and AC mains cord stilll plugged-in), you can physically damage the mobo.

john albrich Jan 05, 2011, 12:56am EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: Jan 05, 2011, 01:17am EST

 
>> Re: Power Surge - Computer will not turn on - Little green flashing light
Sheryl Mc said:
P.S
How do I know which power supplies are compatible with my computer as it's refurbished?

Body: HP A000
System Number: PJ516AA
Windows XP
Hard Drive: Barracuda 7200.8 300gb Model Number: 8T3300831AS
Power Source: Model Number: ATX-250-12Z

If you do have to or decide to replace the PSU, before doing so you should also examine the physical design: the size, where the mounting screws are located, and where the fan inlet is with respect to cable output(s) and orientation in the case.

Some PSUs and system cases of retail pre-assembled computers (especially older models) are custom designed, and the "standard" off-the-shelf PSU form-factor may be incompatible. I don't know if HP is better or worse than others in this area.

If they have a good return policy and a replacement PSU doesn't fit you can just return it. However, you may have to obtain a "standard" case and reconfigure everything if you can't obtain a PSU that fits properly in the original case.


edit to add:
As far as I can tell, this seems to be the Bestec ATX-250-12Z PSU, or at least a given version of it. http://www.atxpowersupplies.com/250-watt-power-supply-FSP250-60ATV-1A.php
It appears as though it's compatible with the "standard" PSU form-factor for a top-of-case PSU (the picture looks like it is actually upside-down from the way it is mounted in the case), but it still might save you some time if you can double-check before purchasing a replacement.

Sheryl Mc Jan 05, 2011, 11:01am EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: Jan 05, 2011, 11:09am EST

 
>> Re: Power Surge - Computer will not turn on - Little green flashing light
Re: CMOS clearing test.

*slight perplexed look*
...huh??
lol

I'm a woman good with instructions and doing it herself. ;)
The desciptive electronic analysis and functioning I don't understand. ...Well a little, then I find myself saying, "huh?" again. lol

Sheryl Mc Jan 05, 2011, 11:05am EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
It would be best for me to bring my computer into a computer parts shop. This way they can help me find the best suitable power supply for my tower. ;)

Thanks for all the information gentlemen. :o)

Sheryl

john albrich Jan 05, 2011, 02:02pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: Jan 05, 2011, 02:07pm EST

 
>> Re: Power Surge - Computer will not turn on - Little green flashing light

Sheryl,

The CMOS clearing is actually very easy even for someone who is not very "technical". The instructions are usually easy to understand and illustrated in the user manual. It also might be called "CMOS reset", "BIOS reset", or similar.

It involves using a metallic item (usually a special "jumper" which may be supplied on the motherboard) and temporarily connecting 2 metal "pins" together on the computer motherboard.

Locating the pins is generally the hardest part of the procedure.

You can get a good idea of what's involved from YouTube videos. Use Google, YouTube, or other favorite search engine and enter these terms in the search bar:
clearing cmos video youtube

You'll see it's not too hard.

But remember to follow the instructions in your manual...NOT the video...because it can be slightly different for each motherboard.

G. G. Jan 05, 2011, 06:05pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
John,

It is best for her to take it into a shop and have them replace the psu.

Or..... she can take out the psu herself, make a note of all the connections.... take the defective psu and get one that best matches it and then reinstall....



As for her computer and clear CMOS..... ummmmm.... she wont have a motherboard manual... because it is a very old prebuild unit.... by !@!@#$%%^%$##@!!! company...

It is one of these - http://ak.buy.com/PI/0/500/10385647.jpg



---------------------------------------------------------------------------------------------------------------------

-
john albrich Jan 05, 2011, 06:32pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light

I just like to try to get people to see they mightn't always be at the mercy of the repair service (along with the attendant security, competence, and out-right con-job risks). Plus...if someone can stretch just that little bit, they might gain some confidence and start digging into things, learning something, perhaps saving some money, and maybe even having some fun while they're at it.

But then...she might turn into one of us!!! I take it all back! Run! Run now!


Didn't want to assume she didn't have a manual or couldn't find one online...especially for a fairly easy procedure that doesn't cost anything to try. I've seen too many systems over the years that "won't boot" due to an unplanned power outage that were "fixed" by wiping CMOS and re-booting to not at least suggest it.

Dr. Peaceful Jan 05, 2011, 06:48pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
G. G. said:
...As for her computer and clear CMOS..... ummmmm.... she wont have a motherboard manual... because it is a very old prebuild unit.... by !@!@#$%%^%$##@!!! company...

It is one of these - http://ak.buy.com/PI/0/500/10385647.jpg

Honest advice: take your hard drive out, and toss that piece of sh*t in the trash!! Not worth spending $100-200 bucks for the repair shop. You can use that money to buy a much better new computer!

So G.G., you're unknowingly doing tech support for HP. How coincidental. XD

Sheryl Mc Jan 09, 2011, 03:22pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: Jan 09, 2011, 03:50pm EST

 
>> Re: Power Surge - Computer will not turn on - Little green flashing light
Hello Gentlemen,

I took the tower down to some computer repair shops. The first one checked it out for free. Motherboard & Hard drive are good, but the power source is toast.
Would cost $79 to fix with installation, or $49 for the Power source and I can do it myself.
I figured I'd check out a couple of other shops to see what new or used computers they had just as an option.
Went to a computer store that I hear advertised on the radio all the time. The sales rep/general manager (young handsome guy mid 20s) tells me, "Why would you waste $80 on getting it fixed when you can put it to a new computer?" ....The thought already crossed my mind, and he showed me some new computers with great specs and gave me an awesome deal on a new computer.

Well, to make a long story short. The guy is con artist. The computers are not new, they are refurbished, some with defects (now I know to open and look at it before I get it home) Did an exchange as they do not do refunds. I get the second one home, and it had a glitch in the installation and wouldn't boot into Windows.
...Needless to say, I was pretty p**sed off.
I had to drive all the way back to the other side of town (again), and very politely and sternly told him I do not trust him, and pointed out step by step how I now know the little tricks he pulled along the way. (He looked real worried.lol) He did a full refund. :)

Anyways. ...Back to the computer at hand. lol

I took it back to the first place I went and they gave me new power supply, installed for $50.

_____________

Now: (my luck has been great with computers I tell ya. lol) ....
The damn thing keeps powering down. ....
Its manages to get past the start up screen a couple of times but then go to go online and it powers down again. .... :( ...?

... It is now back at the shop, $45 fee pending for diagnostic.
.... *sigh*

G. G. Jan 10, 2011, 07:47pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
Sheryl,

Sorry to hear your whoes..... You sure got a good going over by that dweeb getting you to buy a computer under false pretence. Glad to hear that you stood your ground and got a full refund back.

as for the comuter repair shop... kinda looks like they didnt fully test the system after installing the psu prior to returning it back to you. Hope they dont end up raking you too... keep your eye sharp....

Personally I had every confident that you could've done this psu swap out yourself.


---------------------------------------------------------------------------------------------------------------------

-
G. G. Jan 10, 2011, 08:08pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: Power Surge - Computer will not turn on - Little green flashing light
Dr. Peaceful said:
G. G. said:
........ because it is a very old prebuild unit.... by !@!@#$%%^%$##@!!! company...

It is one of these - http://ak.buy.com/PI/0/500/10385647.jpg

.................
So G.G., you're unknowingly doing tech support for HP. How coincidental. XD


freak'n bastards....

That's ok...... i'm not doing it for them.... doing it for Sheryl..... By the way.... I had a face to face interview with a open position at IBM this afternoon for contract work... wish'd it was a perm job... but hey.... you get what you get to be able to get the dough rolling back in until the next gig. The position is for 3 level/escalated support i.e. labs. I walk away from the face to face interview feeling pretty good. I believe I will get another face to face interview for the next step.


---------------------------------------------------------------------------------------------------------------------

-

Write a Reply >>

Continue Reading on Page: 1, 2, Next >>

 

    
 
 

  Topic Tools 
 
RSS UpdatesRSS Updates
 

  Related Articles 
 
 

  Newsletter 
 
A weekly newsletter featuring an editorial and a roundup of the latest articles, news and other interesting topics.

Please enter your email address below and click Subscribe.