Analyze this minidump please

[onzfeat]

my computer lagged or screen goes black, and some times appear blue screen
View attachment 51579
View attachment 51580

 

[B00kWyrm]

Your crashes occur while playing World of Warcraft?

Is your video card supported by your software?

You may find it helpful to try updating, (or rolling back) your video drivers.

Your hard drive may be fragmented, and need to be optimized. (I saw one user report that defragging solved his issue).
The dumps are saying that it is a driver or hardware issue... One was 0xA, and the other was 0x7E (c0000005).
RE: 0xA

This Stop message is typically due to faulty or incompatible hardware or software.
Possible Resolutions:

• A Stop 0xA message might occur after installing a faulty device driver, system service, or firmware. If a Stop message lists a driver by name, disable, remove, or roll back the driver to correct the problem. If disabling or removing drivers resolves the issues, contact the manufacturer about a possible update. Using updated software is especially important for multimedia applications, antivirus scanners, and CD mastering tools.
• A Stop 0xA message might also be due to failing or defective hardware. If a Stop message points to a category of devices (video or disk adapters, for example), try removing or replacing the hardware to determine if it is causing the problem.

Re: 0x7E (c0000005).see here for another user with similar issues...
https://www.techspot.com/vb/topic101985.html
For this user a BIOS Update was required.

While Memory Corruption was not cited in the WinDbg report of your dumps,
you might consider running memcheck as others cases of 0x7e sometimes seem to resolve to this too.

hth