Run an anti virus scan. It is probably ad-ware. Also, try uninstalling any recently installed software or browser helper objects (BHO's). Also make sure you have the most recent AV definitions. My laptop specs:
Toshiba Satellite L305D-S5974
AMD Sempron 2200 (2.1GHz)
3GB DDR2 RAM
ATI Radeon 3100 Graphics
ATI SB600 Audio
500GB SATA II Hitachi HDD
DVD-RAM Drive (SATA)
Wi
Hi,
You can try these things.
1) Start-Run type "msconfig" without quote marks. Select the Startup tab. Look for any references to weekly-prizes.com. Remove them if there are.
2) Start-Run type "Services.msc" without quote marks. Scroll down until you see Messenger (not msn messenger) and double click it, select disable.
3) You can also download Malwarebytes update and run a full scan, from this link:
http://www.malwarebytes.org/