I have just done a new instal of XP sp2 on a formatted Maxtor diamond max32 HDD. I have installed new PSU ALONG with new:
Biostar GF7050-m2 mainboard
AMD Athlon 64 x2 6000+ skt-am2 cpu
4GB DDR2 800MHz non registered unbuffered Ram (2x2gb sticks)
Spire skt-am2 heatsink and fan

After windows asked to restart it then started to load but then blue screen CRASHED with the following:

STOP: C000021a (fatal system error)
The system manager initialization system process terminated unexpectedly with a status of 0x0000263 (0x00000000 0x00000000)
The system has been shut down


Can anyone help me with this. I would GUESS it is some kind of hardware failure but all the components seem to be working OK.Try here: http://support.microsoft.com/kb/156669/Try an install with just the essential components: 1 stick of ram, just the hard drive and only the mouse and keyboard plugged in.
Also check your motherboard documentation to make sure that you have everything hooked up right . And then check it again Thanks all for advice. Have got further now, it was the cmos jumper set to clear not normal. For transit i suppose, DOH. Now having further probs tho see new post on CPU frequency.
Thanks again for help
Try 375 MHz. Listed as official memory clock speed. ( 3000 MHz / 8 )
Thanks now tryin that
Nope still not wantin to know. System boots too info screen giving memory test info type of memory etc but says at bottom

Warning! now system is in safe mode
Please re-setting cpu frequency in the cmos setup

Press f8 to enable system configuration
Press f9 to select booting device after post
Press f1 to continue, del to enter setup
01/10/2008-nf-mcp68-6a61mb01c-00

Have tried f8 and f9 but nothing happens . del onv gets me to bios and f1 leads to blue screen as no operating system on yet.
Any ideas PLEEEEEEEEEASE before i resort to the big hammer.
did you check that RAM is right for the board?
came with it as all in one PACKAGE. Is DDR2 800mhz which is what board supports and is showing up ok on boot screen.set memory speed to 200 & work up till it gets unstable.
ok will try that but will leave it for a while else i will end up usin the hammer lol. Thanks for advice will keep you informed and be beggin for more help soon no doubt.
Something could be faulty among your new purchases. As with all new builds, check everything is seated OK.

Thanks all for your help and advice. Now have system up and running Hurrah!
After all that I followed Dias de verano's advice and blow me if it didnt run straight from 201 the first number. Boy did I laugh (NOT).
Once again thanks for help and hope you all have as good a day as I now am.Glad to know you're up and running... You can try and increase the memory clock until it gets unstable, but on the other hand you may be happy with the performance as it is right now.