pc refuses to wake after sleep

hi, ive had my pc 3 years now and up untill xmas all was sweet as a nut but then it started to refuse to wake from sleep around 50% of the time..

i use sleep mainly so i can start it from my iphone and play itunes without having to go upstairs and wait for it to boot and as i say up untill xmas all was well

ive done virus checks, spybot and malwarebytes but nothing solves it

i did take the case panel off and noticed the graphic card didnt seem to be working (fan was stationary) and 2 red lights were on

normal boot from cold is fine (if a little slow)

any help would be greatly appreciated

thanks

ps, this booting from sleep is getting worse all the time and i would guess its around 75% failure right now

if this helps if i put it to sleep and try and awaken straight away its 100% failure, and if i leave it for 24 hours its the same, try and boot after a few hours has a better chance of booting

Hi hondavee4,

Please run the SFC file checker (the sfc /scannow command) 3 times and post the last log file here once you have completed it for me. Follow the directions here:
SFC /SCANNOW Command - System File Checker

Stephen

hi stephen, have done that and posted the log...is it ok to close the elevated prompt now?

the graphic card does nothing, the pc seems to boot and might be running but i cant see anything...

when booting from cold as you would expect the graphic card fan fires into life but from sleep it does nothing and 2 little red lights appear....

Ok, I've looked through the log and all is ok there.

In terms of your graphics card, are the drivers up to date? If not, please update them using the official drivers from the AMD/ATI site.

Stephen

hi, drivers are up todate, that was the 1st thing i done, i took the card out and had a look but there was anything obvious so i put it back in

the power cable was marked up as PCI-E2, i have another that says PCI-E1, have plugged that in and will give that a try...

i took a pic of the 2 lights but not sure if that can help..

cheers

Ok, this is definatly a graphics card issue. Do the lights have numbers next to them as each on will signify a fault. I have a feeling it is a power issue but it could be a mobo issue. One of the lights (it's either called D15 or D1601) indicates a power issue. If this one is lit, you may need a new PSU.

ok, i still have the original hdd that i bought with the pc, something was never quite right with the install of win 7 on that drive so for that last 2 and a half years i have used the drive i have now, so i swapped them over knowing that the last time it ran it used to sleep ok

i turned it on and it started ok, waited a few mins and put it to sleep

on restart it refused, 2 lights and nothing
so i guess that does indeed rule out any posible software issues (i think)

so the main suspects are
1, Be Quiet! Straight Power 650W Power Supply
2, Gigabyte GA-MA770-UD3 AMD 770 (Socket AM3/AM2+) PCI-Express DDR2 Motherboard
3, Asus ATI Radeon HD 4850 512MB GDDR3 TV-Out/Dual DVI/HDMI (PCI-Express) - Retail

nothing cheap to replace but ill do it if i knew which one was troublesome...is there any test i can do?

Ok then,
I've spoken to some of the senior members of the forum and had some advice.

To test the PSU you will need a multimeter. I found this decent tutorial that should help you: How Do I Test the Power Supply in My Computer?

For the graphics card, prime95 will help identify any issues. See here: Hardware - Stress Test With Prime95.

As for the mobo, I have no idea how to test it.

Stephen