Hi I'm having a problem booting my PC after I changed the page file size.Don't remember what size I changed it to but I do know it was to large,I know it should be at least half the memory you have installed don't ask.Also I installed new mem sticks last week, replace 8gb crucial 6400 with 8gb G skill 8500 for performance boost. Started intermittent reboots 2-3 days later which is why I changed the page file, I know reboots are usually power suppl y faults but I just installed mem so I leaned towards that. What I want is to be able to reboot of course but if not able to reinstall win 7 without losing my files or having to move them over to my other drive or to delete the swap file so I can reboot.Power supply is an Antec 850 watt, PC specs;

Mainboard : Asus P5N-D
Chipset : nVidia nForce 750i SLI SPP
Processor : Intel Core 2 Quad Q9400 @ 2666 MHz
Physical Memory : 8192 MB (4 x 2048 DDR2-SDRAM )
Video Card : NVIDIA GeForce GTX 550 Ti
Hard Disk : WDC (1000 GB)
Hard Disk : WDC (1000 GB)
Hard Disk : WDC (2000 GB)
Hard Disk : WDC (500 GB)
Hard Disk : WDC (500 GB)
DVD-Rom Drive : _NEC DVD_RW ND-3520AW
DVD-Rom Drive : HL-DT-ST BD-RE WH10LS30 SCSI CdRom Device
Monitor Type : Acer AL2216W - 22 inches
Monitor Type : Samsung SAMSUNG - 7 inches
Network Card : NVIDIA nForcrce Networking Controller
Operating System : Windows 7 Ultimate Professional Media Center 6.01.7601 Service Pack 1 (64-bit)
DirectX : Version 11.00

How many memory sticks did you use to get to 8 gig? Also did you set any timing parameters when you installed the memory? Was it set to factory settings recommended by the maker?

If you added 4 / 2 gig sticks then try removing 2 and then replace the 2 with the ones you took out and see if there are stability problems.

I had 4 2 gigs and same now I will try that tonight. Thanks for your quick reply.

Boot to safe mode and go from there.

Thanks for your response but it won't boot to safe mode,locks up then BSOD,restarts,repeats tried safemode net support also repair nothing. Reinstalled the ram I replace still no luck. I pretty sure the page file is corrupted. If I try to fix boot with disc will I lose my files? Never done this with win 7 ,have done XP reinstall.