Windows 7 Won't Start Up, startup repairs and system restore can't fix it

[eilis]

I bought acer aspire one D270 {windows 7 starter} . My computer worked fine for 1,5 week. But I got blue screen at last night.I tried startup repairs and system restore.

Startup Repair diagnosis and repair log
---------------------------
Last successful boot time: ‎1/‎26/‎2013 8:40:50 AM (GMT)
Number of repair attempts: 7

Session details
---------------------------
System Disk = \Device\Harddisk0
Windows directory = D:\Windows
AutoChk Run = 0
Number of root causes = 1

Test Performed:
---------------------------
Name: Check for updates
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: System disk test
Result: Completed successfully. Error code = 0x0
Time taken = 15 ms

Test Performed:
---------------------------
Name: Disk failure diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 328 ms

Test Performed:
---------------------------
Name: Disk metadata test
Result: Completed successfully. Error code = 0x0
Time taken = 47 ms

Test Performed:
---------------------------
Name: Target OS test
Result: Completed successfully. Error code = 0x0
Time taken = 280 ms

Test Performed:
---------------------------
Name: Volume content check
Result: Completed successfully. Error code = 0x0
Time taken = 188 ms

Test Performed:
---------------------------
Name: Boot manager diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: System boot log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: Event log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 156 ms

Test Performed:
---------------------------
Name: Internal state check
Result: Completed successfully. Error code = 0x0
Time taken = 78 ms

Root cause found:
---------------------------
Startup Repair has tried several times but still cannot

determine the cause of the problem.

---------------------------
---------------------------
Session details
---------------------------
System Disk = \Device\Harddisk0
Windows directory = D:\Windows
AutoChk Run = 0
Number of root causes = 1

Test Performed:
---------------------------
Name: Check for updates
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: System disk test
Result: Completed successfully. Error code = 0x0
Time taken = 15 ms

Test Performed:
---------------------------
Name: Disk failure diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 328 ms

Test Performed:
---------------------------
Name: Disk metadata test
Result: Completed successfully. Error code = 0x0
Time taken = 47 ms

Test Performed:
---------------------------
Name: Target OS test
Result: Completed successfully. Error code = 0x0
Time taken = 280 ms

Test Performed:
---------------------------
Name: Volume content check
Result: Completed successfully. Error code = 0x0
Time taken = 188 ms

Test Performed:
---------------------------
Name: Boot manager diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: System boot log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: Event log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 156 ms

Test Performed:
---------------------------
Name: Internal state check
Result: Completed successfully. Error code = 0x0
Time taken = 31 ms

Root cause found:
---------------------------
Startup Repair has tried several times but still cannot

determine the cause of the problem.

---------------------------
---------------------------
Session details
---------------------------
System Disk = \Device\Harddisk0
Windows directory = D:\Windows
AutoChk Run = 0
Number of root causes = 1

Test Performed:
---------------------------
Name: Check for updates
Result: Completed successfully. Error code = 0x0
Time taken = 16 ms

Test Performed:
---------------------------
Name: System disk test
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: Disk failure diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 327 ms

Test Performed:
---------------------------
Name: Disk metadata test
Result: Completed successfully. Error code = 0x0
Time taken = 47 ms

Test Performed:
---------------------------
Name: Target OS test
Result: Completed successfully. Error code = 0x0
Time taken = 281 ms

Test Performed:
---------------------------
Name: Volume content check
Result: Completed successfully. Error code = 0x0
Time taken = 187 ms

Test Performed:
---------------------------
Name: Boot manager diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: System boot log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: Event log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 156 ms

Test Performed:
---------------------------
Name: Internal state check
Result: Completed successfully. Error code = 0x0
Time taken = 62 ms

Test Performed:
---------------------------
Name: Boot status test
Result: Completed successfully. Error code = 0x0
Time taken = 32 ms

Test Performed:
---------------------------
Name: Setup state check
Result: Completed successfully. Error code = 0x0
Time taken = 670 ms

Test Performed:
---------------------------
Name: Registry hives test
Result: Completed successfully. Error code = 0x0
Time taken = 3339 ms

Test Performed:
---------------------------
Name: Windows boot log diagnosis
Result: Completed successfully. Error code = 0x0
Time taken = 0 ms

Test Performed:
---------------------------
Name: Bugcheck analysis
Result: Completed successfully. Error code = 0x0
Time taken = 1373 ms

Root cause found:
---------------------------
Unknown Bugcheck: Bugcheck 7e. Parameters = 0xc0000005,

0x86a8b886, 0x878a3b4c, 0x878a3730.

Repair action: System Restore
Result: Failed. Error code = 0x490
Time taken = 0 ms

Repair action: System files integrity check and repair
Result: Failed. Error code = 0x490
Time taken = 1380297 ms

---------------------------
---------------------------



And I tried in safe mode and got this:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.768.11
Locale ID: 2067

Additional information about the problem:
BCCode: 1000007e
BCP1: C000005
BCP2: 86A66886
BCP3: 8789B4C
BCP4: 87897730
OS Version: 6_1_7601
Service Pack: 1_0

Product: 768_1

Help me please!

 

[TrainableMan]

Please read over the posts in the How to Get BSOD help thread.

Being this is only two weeks old you should contact ACER support and have them help you but any way, here are my first thoughts:

1.Because it is a new machine it could easily be a hardware failure such as bad memory, a corrupt hard drive, or a bad motherboard. You should probably run Memtest86+ or it could be other hardware and you may need to return it to ACER
2.It is also possible that you have "treat recommended updates the same as critical updates" checked in the Windows Updates settings and it mistakenly installed a driver that was bad for your computer. Normally you can boot into safe mode (F8 during the boot process) and then uninstall the update.
3.You could put in the W7 DVD and try startup repair from that.