2009年中買的13" MBP從上上週開始就出現開機（或是從睡眠中喚醒）,整個畫面就會像是壞掉的燈管那樣閃爍.
同時畫面有細微橫向閃爍的細紋..
這種情況會持續大約三分鐘,然後就恢復正常..
可是只要關機或是進入睡眠,機器整個冷卻以後再打開,同樣的狀況又會出現.
但也是三五分鐘之後就會又恢復正常...
剛剛忽然想到電腦裡面有個測試的程式,拿出來測,結果如下：
Report for Volume 'Macintosh HD'
Format: Mac OS Extended (Journaled)
Interface: Serial ATA
Capacity: 265.88 GB
Available: 58.14 GB
Used: 207.73 GB
File Count: 694,531
Processor
Passed
This test verifies that the Central Processor Unit (CPU) is operating correctly.
Multiple processors were detected and tested.
RAM
Passed
This test checks physical and virtual memory. The program deploys a variety of memory test routines that allow RAM to be inspected for inconsistencies.
Video RAM
Failed
Video RAM, as all components of your video circuitry, must be fully functional for graphics to be properly displayed. Damaged VRAM can cause missing bits, screen noise, system lock ups, or freezes. TechTool Deluxe tests the VRAM on the Macintosh main logic board, as well as some third-party video cards.
If the VRAM test should fail, try these steps in order and run the test again after each step:
o Quit all other applications.
o Restart the system.
o Check any recently-added hardware for proper installation.
o Run the computer from another volume (if available).
o Reinstall the OS.
o Contact AppleCare.
USB
Passed
The USB test verifies that control signals sent over the USB are properly transmitted and received.
Drive Hardware
Passed
Checks the physical attributes of the device containing the selected volume.
Format Check
Passed
This test establishes whether the volume was properly formatted during initial setup routines.
Directory Scan
Passed
Performs a read test of the directory area for the selected volume.
Surface Scan
Skipped
The Surface Scan test will scan the disk for bad blocks.
Random Read
Passed
Used in conjunction with the Random Write test, this test verifies that data can be reliably read from random memory locations.
Random Write
Passed
Used in conjunction with the Random Read test, this test verifies that data can be reliably written to random memory locations.
Linear Read
Passed
Used in conjunction with the Linear Write test, this test verifies that data can be reliably read from a linear set of blocks on the device.
Linear Write
Passed
Used in conjunction with the Linear Read test, this test verifies that data can be reliably written to a linear set of blocks on the device.
Seek
Passed
This test checks the ability of the initiator to position the device heads in preparation for access to a particular logical block on the device.
Read Buffer
Passed
Used in conjunction with the Write Buffer test, this test checks the device buffer cache and bus integrity.
Write Buffer
Passed
Used in conjunction with the Read Buffer test, this test checks the device buffer cache and bus integrity.
Volume Structure
Passed
TechTool Deluxe can scan volumes for problems related to the numerous structures that are necessary for the volumes to operate correctly. If problems are found, TechTool Deluxe can attempt to repair the damage to help reduce the chance of future problems.
就是看樣子是VRAM出了問題,想請問VRAM可以更換嗎？
又這樣大約會需要多少銀兩呢？
從 APP 打開
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