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  Compaq Presario CQ50 
 Date Written 
Leann Underwood Mar 17, 2013, 12:36pm EDT Report Abuse
Not sure how this happen, just using my laptop playing secondlife and reading mail like i normally do and poof, this is what shows up, white lines evenly from top to middle and seems color fading washed out towards bottom.

room temp is average 77-85 degrees as i dont have air conditioner yet.

had this laptop for 2 years now no problems till now, and this just started today.

here are my flickr photos of my laptop

Hopefully someone will have same problem and situation and will know what should I do, because i do rely on my computer for day to day activities.

Thank you All,

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Joshua Marius, LeThe Mar 17, 2013, 07:58pm EDT Report Abuse
>> Re: Compaq Presario CQ50
Seen this many times. A quick troubleshooting step is to plug in an External monitor, either through VGA, HDMI, all ports should be tested.

1. If you see the same thing then your video Chipset is most likely the issue.
2. If it does not happen, on an external monitor, you most likely have to replace the screen.

Joshua Marius
Windows 7 Ultimate x64 SP1
Intel Core i5-2500K
Intel SSDSC2CW180A3 180 GB
RAID 1: Seagate ST3750528AS 750 GB
CORSAIR Vengeance 8 GB DDR3 1600
eVGA GeForce 8800 GTS
john albrich Mar 17, 2013, 08:33pm EDT Report Abuse
>> Re: Compaq Presario CQ50
I agree with Joshua as to most likely possible causes, but some additional info to check before going through the expense of replacing the display or the motherboard...just in case.

In some instances video may also share system RAM and the system RAM subsystem may be contributing to the problem. Check your user manual to determine if your laptop has this ability and/or even has dedicated video RAM. See this for more info on video system RAM sharing

If the system RAM subsystem is the problem, depending on the type and location of damaged RAM you may or may not also have seen other non-video related system problems (e.g. unusual system activity or responses; Blue-Screens, re-boots, or "odd" program operations", etc)

Check to see if a UEFI/BIOS Settings option is set to use system RAM with video. Assuming there is sufficient dedicated video RAM, and if it is sharing RAM, then turn that option off and retry all tests.

If you continue debugging at this point, and if you have multiple system RAM memory modules, you can try swapping their positions and see if that makes a difference. Caution: note that it's possible that swapping RAM, if any is defective, could cause other problems such as file corruption. So, when running such tests, it is best to disconnect the internal hard drive or SSD and boot from a diagnostic CD/DVD (such as UBCD) or use a "Live CD" (such as an Ubuntu, Knoppix, or other Linux-based distro).

Note: when working on the electronics, always use appropriate ESD and complete power removal protocols.



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