I have a dell inspiron 1100 and I recently reformated and the screen is very small,a window pops up and say's to fix the problem but when I click it nothing happens,does it have anything to do with a videocard or do I have to download something,can anyone help?

Do you have a drivers CD ?

If not there are Inspiron video drivers HERE (http://search.dell.com/results.aspx?spf=Inspiron&ssysid=INS_PNT_CEL_1100&ssysn=1100&s=gen&c=us&l=en&cs=&ec=&ira=False&cat=sup&subcat=dyd%2F1004&rf=all&evl=&nk=f&k=inspiron+1100&p=3&nf=&qmp=12&sort=K&snpsd=A&%7Esrd=False&ipsys=False&advsrch=False&p=1)

Windows update should also be on your list of things to do.