Bsod 0x7e new build, help plz

New build from new egg 1 1/2 months old, was running fine then I started getting error beeps. 2 short beeps ( memory). for some stupid reason ( i know I'm an idiot) I ran regcure- It deleted 4000+ registry files!! now I cannot get into windows at all( not even safe mode) Now the error beeps went away...
error is: stop 0x7e, 0xffffffffc0000005, 0xfffffadfc7ace756, 0xfffffadf910d9d50, 0xfffffadf910d9760
I did a repair install.
I ran memtest86+ v4.0 for about an hour (2 passes) no errors reported.
tried switching ram in multiple different ways.
tried with and without my gpu
tried a diferent hdd- and got diff bsod ( 0x7b) this hdd is ide and not sata, with xp pro installed and working on other pc, bios recognises it, but would it need to be configured somehow?
I dont have any more 240 pin ddr2 ram to test it with. But I dont know why 2 sticks of ram would fault at same time.

so my question is: do I need new ram, motherboard, or wipe drive and reinstall windows? Or can I do anything else to save my system?

Specs:
widows xp 64 bit sp2
AMD Phenom 9650 2.3GHz Socket AM2+ 95W Quad-Core Processor - not oc'd
BIOSTAR TA790GXB A2+ AM2+/AM2 AMD 790GX ATX AMD Motherboard
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel
Western Digital Caviar Black WD5001AALS 500GB 7200 RPM SATA
EVGA 01G-P3-N958-LR GeForce 9500 GT 1GB 128-bit DDR2 PCI Express 2.0 x16 HDCP Ready Video Card- pretty highly oc'd
All new...

Any help/suggestions very much appreciated.

Thank you for the reply. Indeed my voltage was a bit low for the manufacture specs so I turned them up to specs.

UPDATE: I changed some settings and was able to boot it in safe mode, but registry was so screwed up I could barely do anything at all. After several hours of trying to salvage anything I gave up and reformated. I learned my lesson further-DO NOT TO MESS WITH THE REGISTRY!!! Regcure absolutly ruined all. I could not copy/paste files, nero was missing various components as were every other disk write software, internet was a mess so I couldnt reinstall anything, it deleted my system restore, I couldnt even get command prompt up.
The thing that probly sucked the most was loosing my saved game files but I'm pretty sure they got deleted too cause they were not in the game directory anymore.
After reinstalling I got another blue screen once but I hadnt set it not to restart when system fail yet, but it hasnt happened again so far(knock on wood) I am still trying to figure out what that was about.....

So to recap my crappy story: DO NOT USE REGCURE or any other registry deleter unless your bored and like to troubleshoot/repair stuff.