Mark, some information about the computer would help. Desktop? Laptop? Manufacturer and model?
Problems: You are describing problems that may or may be related:
1. A blinking cursor on boot: did you make any changes or update in the video card? Did you update the video card before this started?
2. Lack of color on monitor: laptop or desk? LCD or older CRT?
3. Slow load on boot: new problem with cursor blinking or slow load anytime?
4. Do you start with a black screen, possibly with white writing, blinking cursor?.
5. Did you may any system adjustment before this began?
6. Do you hear any 'beeps' when you boot?
Troubleshooting:
Check the Device manager:
Start> Run> type in devmgmt.msc> OK> do you see error icon by any sections? That is a yellow triangle with black ! point. If so, click on the + sign in that section to expand the Display Adapter and Monitor sections> and note which device has the error.
Boot into Safe Mode
- Restart your computer and start pressing the F8 key on your keyboard.
- Select the Safe Mode option when the Windows Advanced Options menu appears, and then press ENTER.
If a symptom does not reappear when you start in safe mode, you can eliminate the
default settings and minimum device drivers as possible causes. If a
newly added device or a changed driver is causing problems, you can use safe mode to remove the device or reverse the change.
Using Safe Mode to determine a basic source of a problem:
Safe Mode: Loads the minimum set of device drivers (serial or PS/2 mouse devices, standard keyboards, hard disks, CD-ROM drives, and standard VGA devices)and system services required to start Windows XP/2000/2003.(Event Log, Plug and Play, remote procedure calls (RPCs), and Logical Disk Manager.) User specific startup programs do not run. This is helpful in determining whether problems are due to specific programs.