When i go to start it up, it shows the Windows XP loading screen, then a black then blue screen flash for less than a 1/2 second.

you can do a clean install from your usb. i use this setup for all my flash drive boots.
WinSetupFromUSB - Install Windows XP from USB Flash Drive

This guide will show you, how to use WinSetupFromUSB to create a bootable USB Flash Drive including all Windows source files, plus the following installation of Windows XP. Compare to the different USB_Multiboot versions, WinSetupFromUSB comes with a Graphical User Interface (GUI) and is in my opinion easier to use.

Here you can get the latest version of the program and you will also find many detailed informations about WinSetupFromUSB.

I've tested this guide with a 32-bit version of Windows XP and a 64-bit version of Windows Vista and it worked flawlessly.
Prerequisites:

All you need is:

a USB Flash Drive with at least 1GB of storage
the original Windows XP Setup CD
WinSetupFromUSB

If you use nLite to slim down your version of Windows XP, please keep the following in mind:
DO NOT remove "Manual Install and Upgrade"
under Operating System Options!

I also recommend to integrate Service Pack 3 into your Windows XP source files.
1. Preparations

Download and install WinSetupFromUSB. Default installation path is C:\WinSetupFromUSB.

Create a new folder with the name WINXPCD in the root directory of drive C:\ and copy all files from your Windows XP Setup CD into this folder. Depending on your version of Windows XP, the content of C:\WINXPCD should look approximately like this:

Content of WINXPCD

The following files will show you, which Service Pack is already integrated into your CD:

WIN51IC.SP1, Sevice Pack 1
WIN51IC.SP2, Sevice Pack 2
WIN51IC.SP3, Sevice Pack 3

2. Start WinSetupFromUSB

Connect the USB Flash Drive to your PC and start WinSetupFromUSB. It should show up under USB Disk Selection :

WinSetupFromUSB - main window
3. Select your Source Path

Click on Browse under Windows 2000/XP/2003 Source and navigate to the folder with your Windows XP Source Files. It should be C:\WINXPCD:

Browse to Folder

Click OK and C:\WINXPCD should show up under Windows 2000/XP/2003 Source :

WinSetupFromUSB - source path
4. Format USB Flash Drive

PeToUSB or HP Format Tool are used to format the USB Flash Drive. There is no need to download these programs seperately as they are already included in WinSetupFromUSB.

USB Flash Drives up to 2GB should be formatted with PeToUSB in FAT16, USB Flash Drives with 4GB or more with HP Format Tool in FAT32.

I will use PeToUSB to format my Kingston Data Traveler with 2GB.

In the main window of WinSetupFromUSB click PeToUSB under Format target using to start the program. The USB Flash Drive should show up under Destination Drive. Check USB Removable, Enable Disk Format and Quick Format. Uncheck Enable File Copy under File Copy Options :

PeToUSB

Click Start and answer the following two questions "Continue?" with Yes.
All existing volumes and data will be lost!

If everything goes well, the message "Operation Completed Successfully!" should appear. Click OK and close PeToUSB.

The process with HP Format Tool is similar.
5. Copy Windows XP Source Files

To start the process of copying the Windows XP source files to the USB Flash Drive, click GO in the main window of WinSetupFromUSB. Depending on the write speed of your USB Flash drive it may take a while to copy all files.

WinSetupFromUSB - file copy

At the end the following notice about the Windows installation process should be displayed:

WinSetupFromUSB - notice

Click OK and close WinSetupFromUSB with EXIT.
6. Windows Installation - Part 1

Connect the USB Flash Drive to your PC and turn on the computer. Press ESC at the boot screen and you will be able to select the USB Flash Drive as your boot device from the boot menu.
The ESC key is used by ASUS for the Eee PC series.
Other manufacturers may use other keys, e.g. F8 or F12.

After booting from USB Flash Drive, the following menu should be displayed:

Windows XP/2000/2003 Setup - First and Second parts

Press Enter or wait 10 seconds to get to the next menu:

First part of Windows XP Home Edition setup
Second part of XP Home Edition setup+Start Windows for first time

First part of Windows XP Home Edition setup is already selected. Press Enter or wait 10 seconds to start the Text mode part of setup. During this part you can create, delete and format partitions and finally the setup files are copied to your hard disk. At the end the system will restart automatically.
7. Windows Installation - Part 2

After restart, boot the PC again from your USB Flash Drive. The same menu should be displayed:

Windows XP/2000/2003 Setup - First and Second parts

Press Enter or wait 10 seconds to get to the next menu:

First part of Windows XP Home Edition setup
Second part of XP Home Edition setup+Start Windows for first time

Second part of XP Home Edition setup+Start Windows for first time is already selected. Press Enter or wait 10 seconds to start the GUI mode part of setup. During this part you will be asked for your product key, timezone, usernames and other necessary informations. At the end the system will restart automatically.
8. Windows Installation - Part 3

After restart, boot the PC again from your USB Flash Drive. The same menu should be displayed:

Windows XP/2000/2003 Setup - First and Second parts

Press Enter or wait 10 seconds to get to the next menu:

First part of Windows XP Home Edition setup
Second part of XP Home Edition setup+Start Windows for first time

Second part of XP Home Edition setup+Start Windows for first time is already selected. Press Enter or wait 10 seconds to Start Windows for the first time. The Windows installation process will be finished and finally the Windows Desktop will appear.
DO NOT disconnect the USB Flash Drive too early!

At next startup you can boot into Windows from your hard disk.
Notes:

After successsful installation, the following boot menu will always be displayed during startup:
Please select the operating system to start:

Microsoft Windows XP Home Edition
USB Repair NOT to Start Microsoft Windows XP Home Edition

If you don't plan to use the repair option and want to boot directly into windows, you have to do the following:

Open the file boot.ini in the root directory of drive C:\ with Notepad:
[Boot Loader]timeout=30
Default=multi(0)disk(0)rdisk(0)partition(1)WINDOWS
[Operating Systems]
multi(0)disk(0)rdisk(0)partition(1)WINDOWS="Microsoft Windows XP Home Edition" /noexecute=optin /fastdetect
multi(0)disk(0)rdisk(1)partition(1)WINDOWS="USB Repair NOT to Start Microsoft Windows XP Home Edition" /noexecute=optin /fastdetect

Delete the following line:
multi(0)disk(0)rdisk(1)partition(1)WINDOWS="USB Repair NOT to Start Microsoft Windows XP Home Edition" /noexecute=optin /fastdetect
DO NOT delete the wrong line!
Your computer may not boot the next time!

Save changes to the file.

At next startup the boot menu will not be displayed.

If you want to keep the repair option, you can reduce the time to display the operating system options from 30 to 5 seconds:
[Boot Loader]
timeout=5

Save changes to the file.

At next startup the boot menu will be displayed only 5 seconds.

gd luck

Ram was your best bet on a laptop. But you can load XP onto itself so it reloads without deleting any files. However, if it still may fail. If that happens a clean install is your next step.

1 - You may need to roll back system with System Restore. Under Safe Mode (press F8 during boot and choose safe mode).
Win 7 - Start > Search type System Restore
XP - Is Start > All Programs > Accessories > System Restore. Now choose a date prior to problem. You may have to try a few dates.


2 - Try disabling startup programs. Go to Start > Run (search in Win 7) and type MSConfig. Startup tab and uncheck anything that you don't want Windows to load automatically. It will make Windows boot faster and use less resources while running. This just disables them in startup. Programs will still load, but when only you initiate.

You need to re-format and re-install windows.

Your boot files or windows installation is corrupt.
You may need a windows disc of the same version installed to fix it, if you dont have 1, or a recovery disk, you may be left with no option but to reinstall windows (You may need to buy 1)

Please press f1 ,it will take u to bios ,reset that with f5.......
and also after that remove each and evry cable and then press power button for 1 min and then replug the cable

If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

Are you able to boot in safe mode?
Are you able to boot from cd?

you may have to reinstall windows.

Sometimes they make the recovery disk with windows on it, but not the programs that start windows during the boot up phase. One of the three main files that boots into windows is corrputed or your Master Boot Record is missing. There are two options you can try without the OS disc so lets see if one of those will work: 1) boot up and press F8 to enter safe mode. Once in safe mode sometimes you can also get into window because just the minimum of the program is loaded. F8 Safe Mode>in windows>click start>accesories>system tools>system restore. It will allow you to restore your computer to a prior date before you have problems. 2)if that don;'t work then F8 safe mode and while in safe mode choose Last Known Configuration. Kinda works the same way as restoe but you don't have to be in windows to do it. If those don't work then get your hands on a windows xp disc, anyone's will do, don't have to be yours. Let me know how it goes.
Rate this solution. You can also find out about this at support.microsoft.com>help and support>type in Windows XP boot disk in the search engine.If those don't work let me know and we'll move on to phase II.

your windows prolly crashed because your hard drive is going bad, and thats why your getting error messages when reinstalling.