I've just recently purchased a new computer, specs as follows.
Gigabyte mobo p55a-ud3r for intel i5 socket
Radeon 5850hd 1gb
4gb corsair xms dual channel ddr3 1600mhz
1tb western digital hdd
Core i5 intel 2.8ghz
600watt PSU zalman
I install windows 7 ultimate with factory default bios settings. it installs, restarts several times as indicated then loads upto start first time in which it then instantly turns off and 3 seconds later turns back on again.... Brand new system and it doesn't work in the windows 7 environment as of yet. Only thing that isn't *brand new* is the PSU which mind u has only been used for a month or two. I've built my own systems for years so I'm not a total newb hehe.
I'm installing xp sp3 at the moment and waiting on the outcome; will update asap.
Thanks in advance for any ppl who help.