Please register or login. There are 0 registered and 1215 anonymous users currently online. Current bandwidth usage: 326.30 kbit/s December 16 - 09:26pm EST 
Hardware Analysis
      
Forums Product Prices
  Contents 
 
 

  Latest Topics 
 

More >>
 

    
 
 

  You Are Here: 
 
/ Forums / Portable Hardware /
 

  help my compaq presario f700 won't turn on! 
 
 Author 
 Date Written 
 Tools 
Rachel bell Apr 27, 2009, 01:41am EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List Replies: 15 - Views: 57516
please help i'm a college student...my life is on this computer and i need it on fast. i've done everything i can personally think of and what some people have told me to do...it will not turn on what so ever like the screen will not but the power light will light up and so will the 3 lights above the wireless light all turn on just not the screen and i can hear the hard drive... please help i don't want to take it into a shop i cannot afford that..

Thank you!
Rachel


Want to enjoy fewer advertisements and more features? Click here to become a Hardware Analysis registered user.
john albrich Apr 27, 2009, 11:08am EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: Apr 27, 2009, 11:36am EDT

 
>> Re: help my compaq presario f700 won't turn on!
A couple ideas.

With the computer turned on, can you see any "dark" images/text on the screen by looking at different angles?

Can you connect an external display to the computer? Your screen might have a failed internal backlight, and if that is the problem you can use an external display until you can get it fixed/replaced. Your manual should tell you how to do this.

I would bet that someone has an extra display they can loan you for a bit. Of course, if this is the problem and if this is a laptop (as I suspect), you won't be very "mobile" until the computer is fixed or replaced.

The good news would be that if that is the problem, you can tell the repair/warranty folks what is most likely required (replace the backlight bulbs and/or backlight power supply in the screen). Those are not expensive but they may try to charge you a lot anyway. It could be cheaper to replace the entire screen (although they sometimes will try to replace it with a used screen, so be careful), and in some cases it could even be better to replace the entire computer. I know you said you couldn't afford a repair, but you ultimately may have no choice. However, some fellow student computer users may be willing to try fixing your backlights so you might ask around. It can be very tricky depending on the laptop model. But, all you might have to buy in that case would be parts and pizza.


However, if it isn't just the backlight and the computer isn't even booting successfully, then...

Since you said,
...my life is on this computer....
I'm assuming you mean that the data on the hard disk are critical to you.

If that's the case, I know you probably won't like this because it will slow things down, but I'd strongly recommend the very first thing you do is backup the hard drive. Take it to a friend's computer and use a hard-disk IDE/SATA to USB adapter (~US$20) (or whatever will work with your disk and their computer). Then use a program like freeware DriveImageXML or similar to backup the drive.

When a system has a catastrophic failure (e.g. where it won't even begin to boot), it's quite possible that any diagnostics you try, or suggested fixes may contribute to corrupt your data on the disk. Thus, a backup is a good idea.

In fact, it's a good idea in such cases (e.g. where it doesn't even go through POST) to debug the computer as much as possible without the hard disk being connected.

greg c May 11, 2009, 10:31am EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: help my compaq presario f700 won't turn on!
your probobly experiencing hard drive problems. i sufferd the exact same problem, the hard drive turns on but the screen remains black, this computer hard drive usualy experiences this problem. for the data transfer i dont know what to say, last time i checked you will need to take it to a shop to transfer the info, but they may just end up replacing the hardrive. if you backed up your data onto the "d" hard drive, then you might be able to recover it after you get the new hard drive.

hope this helps.

greg kapageridis Nov 01, 2009, 07:21am EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: help my compaq presario f700 won't turn on!
Remove hard drive( all you need to have is a screw driver to remove the 2 screws that hold the cover of the hard drive and to gently pull up the hard drive), turn compute on, screen now comes on fine, shut computer, re-install hard drive, your computer should now be working fine.
This is for the F700 Compaq series.

greg kapageridis Nov 01, 2009, 07:22am EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: help my compaq presario f700 won't turn on!
Remove hard drive( all you need to have is a screw driver to remove the 2 screws that hold the cover of the hard drive and to gently pull up the hard drive), turn compute on, screen now comes on fine, shut computer, re-install hard drive, your computer should now be working fine.
This is for the F700 Compaq series.

bill224 Sep 14, 2010, 12:00pm EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: help my compaq presario f700 won't turn on!
I am pretty sure my HD, battery, RAM are all OK….
—I could see my battery light is on whenever I took it out for a while then put back, and after a whille the light off (should be fully charged).
we bought expansion RAM card, so we have 3, I did test all of them in each ram slot.
I also switch my power suply between HP L2000 (the oldest still alive over 6 years) and the broken one.
I notice the broken one didn’t warm up the power adpter–quite cold. but the same power supply plug into L2000 it warmed up as normal. does it mean something ?

During I did the disassemble job, I only found one hair in FAN, and very minor dust there, I didn’t see any silver stuff there, could dry up within 2 years 4 months after we bought ?

I found I couldn’t remove two screws securing the wireless card.

I also found a 2-thin-wires(black, red) link between top cover and bottom (mother board on bottom) which didn’t mention and seems can’t disconnect.

there is a cable original didn’t properly connect (beside the phone jack#2), I adjust it.

right now, I am highly suspect the computer store (Micro Center or Fry’s) sold the 2nd hand notebook instead of original to us. in the mother board I also saw at least 4/5 places have replace-paper mark there.
I would try to bring broken one back to the store we bought and see what they say.
I knew it won’t work neither HP nor the store care about, right now MONEY is the only thing they want. I did contact HP manager–Ana, she only passioned about whether we would pay $390 to send it back and repair. After I emailed her what our experiences including we found while disaasemble, she never response.

bill224 Sep 14, 2010, 12:00pm EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: help my compaq presario f700 won't turn on!
I am pretty sure my HD, battery, RAM are all OK….
—I could see my battery light is on whenever I took it out for a while then put back, and after a whille the light off (should be fully charged).
we bought expansion RAM card, so we have 3, I did test all of them in each ram slot.
I also switch my power suply between HP L2000 (the oldest still alive over 6 years) and the broken one.
I notice the broken one didn’t warm up the power adpter–quite cold. but the same power supply plug into L2000 it warmed up as normal. does it mean something ?

During I did the disassemble job, I only found one hair in FAN, and very minor dust there, I didn’t see any silver stuff there, could dry up within 2 years 4 months after we bought ?

I found I couldn’t remove two screws securing the wireless card.

I also found a 2-thin-wires(black, red) link between top cover and bottom (mother board on bottom) which didn’t mention and seems can’t disconnect.

there is a cable original didn’t properly connect (beside the phone jack#2), I adjust it.

right now, I am highly suspect the computer store (Micro Center or Fry’s) sold the 2nd hand notebook instead of original to us. in the mother board I also saw at least 4/5 places have replace-paper mark there.
I would try to bring broken one back to the store we bought and see what they say.
I knew it won’t work neither HP nor the store care about, right now MONEY is the only thing they want. I did contact HP manager–Ana, she only passioned about whether we would pay $390 to send it back and repair. After I emailed her what our experiences including we found while disaasemble, she never response.

Kuffie Kuffie Dec 18, 2010, 06:43pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: help my compaq presario f700 won't turn on!
Rachael,

I have read the previous posts and I didn't see any reply to the first helpful persons question of hooking up an external monitor to see if the laptop monitor is bad. The monitor could be bad, or the laptop could be set to display to the external video port which is used when you want to use an external monitor. Consult your owners manual or the web for your particular model of laptop to get the directions on how to toggle between the built in monitor and an external one. This is usually a combination of the Fn and one of the F keys (usually marked with a pictorial icon on the key). Someone may have accidentally pressed these key sequence and not told you. If you hook up an external monitor and see an image (step 1) you may have an easy fix by simply switching back to the on board laptop monitor. If you see an image on the external monitor but not the laptop after you have tried toggling between the two monitors then your on board monitors back-light bulb may be bad and need replacing by a certified tech. Hope this helps.

Kuffie

Leigh Jaques Jan 02, 2011, 12:24pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: Jan 02, 2011, 12:36pm EST

 
>> Re: help my compaq presario f700 won't turn on!
The symptoms sound like to me that you need to have your gpu reflowed. If your laptop starts up and you cannot see it on the screen, but lights are on and you hear the hard drive, then I would suspect that the problem has to do with the graphics chip. There are many different models that have this problem. This is due to the solder that they used in the Nvidia chipsets. A lot of times the wireless would disappear prior to the gpu going bad.
The procedure is quite lengthly. In short it means dismantling the laptop until you are down to the bare motherboard, removing the heatsink and cpu, covering the motherboard with cardboard and tinfoil, leaving only the gpu showing. and using a heatgun ( moving it back and forth, about 2" above the gpu) to bring the temperature of the gpu up to 200 - 220 degrees farenheit, for about 8 minutes. This is a delicate procedure and should not be done by any who does not have experience.
This is not a guarantee by any means and you could easily ruin the motherboard. But I have had great luck with this procedure. I have done Compaqs, HPs and a Toshiba.
I hope this helps.

Leigh

john albrich Jan 02, 2011, 01:16pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: Jan 02, 2011, 01:24pm EST

 
>> Re: help my compaq presario f700 won't turn on!
Leigh Jaques said:
The symptoms sound like to me that you need to have your gpu reflowed....using a heatgun ( moving it back and forth, about 2" above the gpu) to bring the temperature of the gpu up to 200 - 220 degrees farenheit....


Erm, a temp of 200-220F is not going to reflow any motherboard or component solder...it's not even close to the temps needed.

However, the application and removal of heat might cause expansion/contraction of some connections that had suffered from contaminants, corrosion, tolerance issues, cold solder joints, etc. and temporarily "fix" or perhaps even long-term "fix" unreliable connections. I wouldn't consider such a non-specific fix reliable however, and I'd make sure my data were appropriately backed up (which I do anyway...so no extra work there).

And as you stated "could easily ruin the motherboard". Applying that high heat for 8 minutes is highly likely to damage other components or parts of the motherboard. The only time I'd even consider trying something like that is if the only next step available to me is to toss it into the rubbish bin. Even then I'd be saving for a replacement ASAP.

Leigh Jaques Jan 02, 2011, 07:17pm EST Reply - Quote - Report Abuse
Private Message - Add to Buddy List

Edited: Jan 02, 2011, 07:20pm EST

 
>> Re: help my compaq presario f700 won't turn on!
Sorry for the confusion, my mistake 230 degrees celcius and the actual time is about 1 1/2 minutes.
Got 2 procedures mixed up.. Like I said I hve done this about 5 times with success.

The other procedure is to strip the mb and put it in an oven at 380f for about 8 minutes.
This one I have not done.

Also, a penny with heatsink compound is used in place of the foam between the gpu and heatsink.

Scott Wallace Apr 01, 2011, 09:07am EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: help my compaq presario f700 won't turn on!
A friend of mine had 2 of these units, both exhibited the same symptoms. I took them completely apart, removed everything I could from the motherboard, put into a pre-heated oven at 385 F for 8 minutes, turned off the oven and let the mb cool for 1 hour. Re-assembled them and both work like champs now. Been running them for over 3 weeks without issue.

brenda haywood May 24, 2011, 03:40pm EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: help my compaq presario f700 won't turn on!
this is my everything my computer is my friend i need help getting it to work . when i press the power button the lights would just come up and go off right away if would not stay on

orie evans May 29, 2011, 12:11am EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: help my compaq presario f700 won't turn on!

orie evans May 29, 2011, 12:18am EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: help my compaq presario f700 won't turn on!
mine would do the same the lights would light up then start flashing when it would flash on i would press the ctrl alt and delete buttons and release them, then it would stay on with no picture on screen.... i pushed on the bottom of the laptop where the hard drive is and wha lha working again......this all started when i dropped it... might have jarred the hard drive a little causing it not to make a good connection....

ocholi yusuf Apr 12, 2012, 12:56pm EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: help my compaq presario f700 won't turn on!
this is my everything my computer is my friend i need help getting it to work . when i press the power button the lights would just come up and go off right away if would not stay on

am having this same problem with my laptop

i will really need help


Write a Reply >>


 

    
 
 

  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.