Computer boot can not enter the WINDOWS XP screen

Computer shop news my computer model is TCL Ruixiang K8376-2, computer configuration is not very good, computer purchase has been a long time, compared to the latest computer configuration in 2012 is worse A lot, the operating system is WINXPSP2, the day before I manually cleaned the virus, deleted the wrong C disk file, causing the boot can not enter the WINDOWSXP screen, prompting that NTLDR is missing, Press CTRL + ALT + DEL to restar. Then I enter the BIOSS Settings, but do not understand English, quit after setting up a random, and then the computer restarts, and then there is no picture. I heard nothing but a picture, and there was no prompt. The LCD screen is a gray screen. So I turned it off and then turned it on again. After hearing the bang, nothing happened. There is no self-test screen. There is no XP startup screen, only the display screen is gray. Checked to say that you want to remove the CMOS battery, the result is the same, I really don't know what to do. I have borrowed my classmate's computer now. There is also no WINXP installation disk. A classmate's computer also has a USB flash drive. Can I fix that bad computer? User analysis and answer: 1. First rule out the simple basic hardware problems, if not, buy a GHOST reloading system, simple and convenient. 2. Use your classmate's computer to download a SP3 system, put it in a USB flash drive, boot your computer with a USB flash drive and install the system.