Window xp wont start nor safe mode :(

Hello,
Hi,
My windows XP won't start. I shutted down the computer yesterday, today when I started it it will run till the windows boot screen, when the bar reaches the end the screen will stay black and nothings happens
I tried to boot in safe mode but after loading the drivers it just stays there as well and wont go on with the boot.
I wanted to repair the system with the Windows XP CD-ROM but I'm not given the option to repair. After it starts all the devices needed, i'm presented with the partitions I have on my PC to choose in which to install windows, if I pick one I can format and install or just install.
Is there a way to run a repair or a scandisk to try and solve the problem without re instaling windows?
Really appreciate any help.
Thank you in advance