Protect Yourself From Tech Support Scams
July 29, 2020
Protect Yourself From Tech Support Scams
Tech support scams are an industry-wide issue where scammers trick you into paying for unnecessary
technical support services. You can help protect yourself from scammers by verifying that the contact is a
Microsoft Agent or
Microsoft Employee and that the phone number is an
Microsoft global customer service number.
BCCode: 7f 0x0000007f with the 00000008 parameter usually means a hardware issue.
Even though this is a new build the below methods still apply :
Have you added hardware or updated drivers recently? Check Control Panel - Windows
Updates to see if any drivers have been updated there just before this started happening.
For 7f - this could be a hardware issue such as poorly seated cards or memory, though there are
other causes. Weak powersupply could also lead to this. Use the troubleshooters above and below
and when you get to the drivers and memory sections refer to my next message below and then
return to the troubleshooters if needed
If a PC remove ALL power. Open case, remove and reseat ALL cards, memory chips, and ALL
cables (do not just try to snug) on both ends if they can be reached and on the device ends if not
(removing the cables and reseating them helps to eliminate minor corrosion).
Notice the 08 (double fault) as 1st parameter means there are likely two causes. Be sure to
Update your drivers manually as using Windows Updates only finds certified drivers and Microsoft
and the Device makers are far behind in that proces. Update NIC, WiFi, BIOS and Video/Display
and other major drivers
If a Laptop or a PC you might have to take to a shop (not BestBuy or other BigBox Stores) or your
System maker's Support.
BCCode: 7F 0x0000007F which is the same as 0x1000007F
The UNEXPECTED_KERNEL_MODE_TRAP bug check has a value of 0x0000007F. This bug check indicates that the Intel CPU generated a trap and the kernel failed to catch this trap.
This trap could be a bound trap (a trap the kernel is not permitted to catch) or adouble fault(a fault that occurred while processing an earlier fault, which always results in a system failure).
The first parameter that appears on the blue screen specifies the trap number.
The most common trap codes include the following:
0x00000000, or Divide by Zero Error, indicates that a DIV instruction is executed and the divisor is zero. Memory corruption, other hardware problems, or software failures can cause this error.
0x00000004, or Overflow, occurs when the processor executes a call to an interrupt handler when the overflow (OF) flag is set.
0x00000005, or Bounds Check Fault, indicates that the processor, while executing a BOUND instruction, finds that the operand exceeds the specified limits. A BOUND instruction ensures that a signed array index is within a certain range.
0x00000006, or Invalid Opcode, indicates that the processor tries to execute an invalid instruction. This error typically occurs when the instruction pointer has become corrupted and is pointing to the wrong location. The most common cause of this error
is hardware memory corruption.
0x00000008, or Double Fault, indicates that an exception occurs during a call to the handler for a prior exception. Typically, the two exceptions are handled serially. However, there are several exceptions that cannot be handled serially, and in this situation
the processor signals a double fault. There are two common causes of a double fault
Bug check 0x7F typically occurs after you install a faulty or mismatched hardware (especially memory) or if installed hardware fails.
A double fault can occur when the kernel stack overflows. This overflow occurs if multiple drivers are attached to the same stack. For example, if two file system filter drivers are attached to the same stack and then the file system recurses back in, the
Resolving the Problem
Troubleshooting: If you recently added hardware to the computer, remove it to see if the error recurs. If existing hardware has failed, remove or replace the faulty component. Run hardware diagnostics that the system manufacturer supplies to determine
which hardware component failed.
The memory scanner is especially important. Faulty or mismatched memory can cause this bug check. For more informaiton about these procedures, see the owner's manual for your computer. Check that all adapter cards in the computer are properly seated. Use
an ink eraser or an electrical contact treatment, available at electronics supply stores, to ensure adapter card contacts are clean.
If the error appears on a newly installed system, check the availability of updates for the BIOS, the SCSI controller, or network cards. These kind of updates are typically available on the Web site or BBS of the hardware manufacturer.
Confirm that all hard disk drives, hard disk controllers, and SCSI adapters are listed in the Microsoft Windows Marketplace Tested Products List.
If the error occurred after the installation of a new or updated device driver, you should remove or replace the driver. If, under this circumstance, the error occurs during the startup sequence and the system partition is formatted with NTFS, you might
be able to use Safe Mode to rename or delete the faulty driver. If the driver is used as part of the system startup process in Safe Mode, you have to start the computer by using the Recovery Console in order to access the file.
Also restart your computer, and then press F8 at the character-based menu that displays the operating system choices. At theAdvanced Options menu, select theLast Known Good Configuration option. This option is most effective
when you add only one driver or service at a time.
Overclocking (setting the CPU to run at speeds above the rated specification) can cause this error. If you have overclocked the computer that is experiencing the error, return the CPU to the default clock speed setting.
Check the System Log in Event Viewer for additional error messages that might help identify the device or driver that is causing the error. You can also disable memory caching of the BIOS to try to resolve the problem.
If you encountered this error while upgrading to a new version of the Windows operating system, the error might be caused by a device driver, a system service, a virus scanner, or a backup tool that is incompatible with the new version. If possible, remove
all third-party device drivers and system services and disable any virus scanners before you upgrade. Contact the software manufacturer to obtain updates of these tools. Also make sure that you have installed the latest Windows Service Pack.
Finally, if all the above steps do not resolve the error, take the system motherboard to a repair facility for diagnostic testing. A crack, a scratched trace, or a defective component on the motherboard can also cause this error.
Here are some methods to possibly fix the blue screen issue. If you could give the Blue Screen
info that would help. Such as the BCC and the other 4 entries on the lower left. And any other
error information such as STOP codes and info such as IRQL_NOT_LESS_OR_EQUAL or PAGE_FAULT_IN_NONPAGED_AREA and similar messages.