I need help narrowing down the possible causes of a recent problem I have been having with my computer, due to a whole host of changes I made around the time of the problems appearance I don't know where to start.
Firstly the computer,
I built it around 2-3 years ago.
- a 9800gtx+ gpu (replacement for one that died a year ago)
- a corsair 620watt power supply
- 2 hard drives both Samsung Spinpoints (one is as old as the computer, the other is new)
- a gigabyte s-series motherboard
- an intel core 2 quad cpu
- 4 gb (two 2gb ram sticks) of kingston ddr2 ram
- dual booting windows xp (since construction) and alongside windows 7 (recent), it was windows xp and ubuntu until a few months ago
Strange occurrences before the problem:
Around a year ago the originally 8800gts 512 gpu died after 2 years of service replace with current card.
Current 9800gtx+ ran perfectly up until around 2 months ago when the monitor would randomly lose connection to the monitor similar to current situation when playing certain games forcing a hard reset of the computer. I rolled back the drivers and the problem hasn't happened since but I have not actively attempted to recreate the problem so it may be the issue. This was on the windows xp partition, I have not had the error occur on windows 7
What I have done to the computer recently
- Recently removed ubuntu and the grub mbr, replacing it with windows 7 using the default windows boot manager
- Installed a new hardrive, the hardrive features no essential programs or parts of the operating system on it, only a few games
Detailed description of the problem
Sometimes when I turn on the computer, the monitor remains blank. Neither the gpu bios screen or the mobo bios screen appear. My keyboard's (ps/2) num lock key lights up. It would appear windows continues to boot in the background as when I am inevitably forced to reset my computer and it starts normally, windows 7 complains about being shut down incorrectly.
The fact that the problem manifests itself before any boot screen suggests that the new windows installation can be ruled out as the culprit or am I wrong?
So there we are, hopefully you guys can help me narrow down what area I should start looking into first as I am at a loss where to begin.