Compaq c300 wont boot past Compaq Screen.?

Your hard drive may be at fault, but here are some steps to eliminate

First step - boot into Safe mode if you can (press F8 during bootup)

Choose the Last Known Good configuration

http://support.microsoft.com/kb/307852/en-us

Or choose a System Restore point from a date you know the machine worked http://support.microsoft.com/kb/306084/

If that doesn't work,

Repair the Registry

http://support.microsoft.com/kb/307545

If that doesn't work, start the machine from the Windows XP disk and do a Windows Repair installation.

http://support.microsoft.com/kb/315341/

Microsoft list of things to do if Windows doesn't boot

http://support.microsoft.com/kb/308041/en-us

Could be a problem with device drivers, hardware or software. This problem can be solved by uninstalling new software, updating device drivers and making minor configuration changes . From http://fixit.in/bluescreenofdeath.html . You can also run a free registry scan using utilities from http://re7.info/

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