After upgrading the motherboard, CPU, and RAM in a PC with a 2.4 GHz Pentium 4 CPU, a compatible motherboard, and 256MB of DDR-SDRAM, you start the PC for the first time to load drivers.
After approximately one minute, the system locks up and begins to sound an audible alarm.
What might cause this problem?
1. The DDR-SDRAM chips are incompatible with Pentium 4 CPUs.
2. The DDR-SDRAM chips were installed backwards.
3. >>The CPU cooling fan is not working.
4. The alarm is normal and means it is time to install an operating system.
Explanation : The CPU cooling fan not working is the only possible choice. Since the motherboard, CPU, and RAM were all upgraded, it is logical that one of these components is the cause of the problem. Since the system actually started and ran for one minute, the most likely cause is that the CPU began to overheat. A defective or improperly installed cooling fan would cause the CPU to overheat.
DDR-SDRAM chips are physically keyed to prevent them from being installed backwards.
DDR-SDRAM will work with Pentium 4s on compatible motherboards.
There is no alarm that sounds when it is time to install an operating system.
Objective: Personal Computer Components
