Hey guys; My PC Specs: Operating System: Windows XP Professional (Service Pack 2 installed) Case: NETLINK 18IN 350W ATX 3688 CASE /W FRONT USB PORT P4 READY Motherboard: SOLTEK KT400-A4 ATX SOCKET A DDR400 AGP4X 5PCI ATA133 USB2.0 W/SOUND CPU: AMD ATHLON XP 2100+ 256K 266FSB SOCKET A RETAIL BOX CPU Heatsink: VANTEC AEROFLOW SOCKETA cpu cooler TMD 5600RPM 35.5CFM Memory: 512MB PC2700 DDR333 SAMSUNG RAM Video Card: ABITR9550-128CDT RADEON 9550 128MB DDR AGP8X Hard Drives: 2 X ( WD CAVIAR 80GB INT ATA/100 HD 3.5LP 9MS 8MB 7200RPM OEM) Anti-virus: Kaspersky Antivirus Personal 5.0.121 Firewall: Zone Alarm Pro 5.5.062.011 cASE FANS = 4 FANS (2 INFLOW, 2 OUTFLOW) I have installed Ventec Aeroflow SocketA heatsink, as I have mentioned earlier. I bought this heatsink from "NCIX" few months ago to replace my stock heatsink. I used the "Thermal Greese" that came with this cooler. I used only small amount of this greese and spread it evenly on the CPU die. I read the instructions online. Also, the heatsink is seated properly, as I checked it few times. However, my CPU temperature is too high at the moment. Here is the "EVEREST" summary: Field Value Sensor Properties Sensor Type ITE IT8705F, National LM90 (ISA 290h, SMBus 4Ch) Temperatures Motherboard 36 °C (97 °F) CPU 56 °C (133 °F) WDC WD800JB-00JJA0 32 °C (90 °F) Cooling Fans CPU 3013 RPM Chassis 3125 RPM Voltage Values CPU Core 1.74 V +2.5 V 2.54 V +3.3 V 3.31 V +5 V 5.05 V +12 V 12.48 V +5 V Standby 5.03 V VBAT Battery 2.03 V As you guys can see my CPU's temp is 56 degrees C, and I just started my computer after it been off for whole night. I have only few things opened right now, for example, "Mozila browser, EVEREST, text file, Zone Alarm, Kaspersky, MSN, HP printer (they are on in startup window)." My computer crashes when I try to play any music or video in windows media player or any other player. Also, it freezes when I try to play NHL 2005. What should do? Do I need to buy new heatsink? Help guys.............. thank you.