STOP 0x0000002E DATA_BUS_ERROR - 0x2E

System memory has a parity error.
The Stop 0x2E message indicates a system memory parity error. The cause is typically failed or defective RAM (including motherboard, Level 2 cache, or video memory), incompatible or mismatched memory hardware, or when a device driver attempts to access an address in the 0x8xxxxxxx range that does not exist (does not map to a physical address). A Stop 0x2E message may also indicate hard disk damage caused by viruses or other problems.

If Shadow RAM is enabled, try disabling it.

If new RAM has been added, remove it.