Laptop no longer works or does not display an image?

Ca
1

I need your help I have a Fujitsu Siemens laptop 32 bit with Windows xp but I did Windows 8 a year ago and it went perfectly yesterday I removed the laptop's fan to clean everything when I reinstalled everything I had to find out that the laptop starts and when it starts to work, it doesn't work after a few seconds. Also, no image is displayed. Many thanks in advance and vll I should mention that I have already connected the laptop to a screen and also no picture is displayed

Fa

Did you remove the fan with ESD protection? If not, it is conceivable that components have been damaged. This may have caused the malfunction.