Ive just built 2 identical machines, 1 works fine, other has the problem. Running Windows 7 Beta on both.
Ive googled this problem and found a million answers.
Basically started when playing games, at random intervals (sometimes minutes, other times hours) the monitor
would go into power saving mode and turn off, PC still on but locked up (checked num
and caps lock) and I had to restart with power button. Then it started
doing it other times, ie. when i turned monitor off on a night, next
morning turned it on and it wouldnt come on.
Specs:
AMD Phenom X4 9950 2.6GHz Black Edition Using Stock Fan
ASUS M3N78-VM GeForce 8200 Socket AM2+
Corsair 4GB Kit (2x2GB) DDR2 800MHz/PC2-6400
Zotac 9800GT Synergy Edition 512MB DDR3
1x Maxtor 250gb Internal HD, 2x 1tb External
LG W2252S 22"TFT Monitor
EV Shiny Piano Red/Black Mid Tower Case with 1x250mm, 2x80mm and 1x120mm fans.
Sumvision 550w PSU (just bought a coolermaster 460w extreme power plus, not installed yet)
Things ive tried so far:
Turned off all power saving settings in OS and Bios.
Swapped monitors
Swapped Graphics Cards
Thinking about contacting Asus to see if theres any reports about their Mobo's.
Anyone got any other ideas, or actually knows what the problem is.
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Update:
Changed VGA cable and PSU, seemed ok for a week although didnt play any games in that time. I did tonight and instead of going into power saving mode, I just lost signal on monitor and it was still on. Had to reboot the same.
Changed PSU couple of weeks ago to a coolermaster. Cooling inside is ok, temps are are ok, been monitoring them daily. No overclocking.
Since I changed PSU and cables, I still have the problem although it doesnt go into power saving mode now, it just loses signal but monitor stays on.
It only seems to do it now playing 1 particular game (Football Manager 09) maybe its software related to do with the game and/or windows 7?
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