Replacing a mother board

[gregsteg]

I have been intensely trouble shooting my system for a 2 weeks. Initially I thought it was the video card, now the RAM is giving me trouble but replacement RAM did not fix the problem. Here are my older posts pursuing RAM and video card help.

http://www.ocztechnologyforum.com/forum/showthread.php?69596-OCZ2F10664GK-on-MSI-MS-7514-neo3-ver1.0
http://www.tomshardware.com/forum/281851-33-sapphire-radeon-4850-giving-grief
http://www.tomshardware.co.uk/forum/270666-12-computer-computer-accurately-fails-memtest

I have no solid evidence for this but I am suspecting my motherboard is the culprit. How can I know for sure, and what can I replace it with?

This is what I've got:

Mobo: MSI MS-7514 P45 Neo-3 ver 1.0
BIOS: V1.A (09/04/2009)
CPU: Intel Core 2 Duo E8400
RAM: OCZ2F10664GK (4Gb kit)
Vid: Sapphire Radeon HD 4850 1gb
PSU: Antec Earthwatts 500W
HDD: 2 sata
OS: Windows 7 ultimate 64-bit, windows XP home, Ubuntu 9.10 64-bit

I believe I have a mid sized case and I can fit an ATX board. What other compatibility issues do I need to watch for?
Can anyone recommend a board? Something in the $80-$120 range.

I do not have access to extra parts to swap in and out for troubleshooting.

 

[o1die]

I have used the asrock p45ts-r board with both ddr2 and ddr3 slots. It ran pretty well, but I didn't try any overclocking. The only issue is that windows 7 didn't find the lan port driver, but using the motherboard cd fixed that. Another board that looks promising is the xfx as9 hdmi for only $69.99 shipped.

 

[gregsteg]

I had my computer diagnosed at the local shop and it turned out to be my mobo which lost it's ability to interact properly with my RAM over time... I don't know how this happened.

I went with a ASUS P5Q Pro turbo because it was on sale. Also looked long and hard at the Gigabyte EP45 UD3P. Both had a $20 rebate, gigabyte was more expensive.

I wanted X-fire and RAID options. I also heard I wouldn't have to reformat with the same P45 chipset. Well in the end I am reformatting... I decided RAID looked like too much trouble with my multiboot but the mobo has a handy hardware RAID 0 or 1 I can set up later, probably for keeping my data safe. I do not think my power supply can even handle X-fire so I should have kept things simpler, but hey, I get a rebate.

 

[gregsteg]

Best answer selected by gregsteg.