i have a dell inspiron 1520 laptop (my sisters) that was giving all kinds of error messages. It did not have any service packs installed and it was infected with some adware. I cleaned it, installed all updates as far as SP1, but after two days of trying to install the service pack, which kept failing i decided to follow Microsoft's recommendation to perform a repair installation. This went well, all of the steps were completed but at the end i was left with a blank screen and a curser. Now i cant start windows, even in safe mode. I tried a start-up repair and that couldn't fix it.
Could anyone help me?