HP hardware diagnostic software
article #730, updated 1809 days ago
Test performance and compare with known standard hardware configurations
article #716, updated 1841 days ago
This has worked well:
COM Port Problems under Windows 7 and Later
article #677, updated 1962 days ago
If you have a problem with COM port devices under Windows 7 or later, your system may think it has autodetected it as an old-style RS-232C port mouse! To fix that, regedit here:
and change the DWORD
Start to 4. This prevents the autodetection of COM-port mice!
Contributed by the excellent Brad Hollingsworth.
Some BIOS Items
article #567, updated 2211 days ago
- PCI Latency Timer
This is in cycles, not ms or anything else. It is a timer which sets a time-chunk for each PCI device to do something. If you want low-latency and have major horsepower, turn this one down. For more latency, and less multitaskability, but probably better big-block throughput, turn this one up. Default is usually 64.
- Spread Spectrum
Spread Spectrum is a method of reducing the effects of electromagnetic interference (EMI) between components of a single machine. All of the systems on a modern motherboard give off high frequencies of EMI, and the EMI from one system (say, the CPU) can drive frequencies of another system (e.g., the PCI Express chipset) through the air, to higher speeds which are potentially very bad. Spread Spectrum prevents this by varying the frequencies; some motherboards have separate spread spectrum capabililty for CPU, PCI/PCI Express, and other areas. It is unclear how often the issue shows up. Reportedly, overclockers need to turn this entirely off, at least on the CPU side.
article #457, updated 2213 days ago
Here is some interesting info about SQL:
and a tool:
and another tool, non-free but very good:
Seagate Drive Warranty Checks
article #481, updated 2515 days ago
If you have a Seagate hard drive and want to find out whether it is under warranty, try this:
And if you have more than one, use the Multiple Drive Form:
S.M.A.R.T. Tools for Command Line, Windows and Linux
article #447, updated 2603 days ago
Here is a great set of tools for hard drive status retrieval and monitoring:
The install for Windows is here:
On Windows, if you can get a command prompt on a remote machine, just copy over ‘smartctl.exe’ from the default install, run it like this:
and it will give you a list of IDE/ATA/SCSI drives. /dev/sd* and /dev/hd* will be actual hard drives, CD/DVD drives, tape drives, or RAID volumes; it won’t give useful info for anything but hard drives. Usually a single hard drive will be “/dev/sda”. You can get the health info for /dev/sda with:
smartctl -H /dev/sda
If it doesn’t pass the test, or if it gives any caveats after saying that its test passed, you have a drive whose hours are likely numbered!!!
Disable driver signing in 64-bit Windows
article #423, updated 2675 days ago
bcdedit -set loadoptions DDISABLE_INTEGRITY_CHECKS bcdedit -set TESTSIGNING ON
bcdedit /deletevalue loadoptions bcdedit -set TESTSIGNING OFF
Intel 5000-series motherboard fan control
article #330, updated 2929 days ago
Apparently, if you’re running an Intel 5000-series motherboard in a non-Intel case, the fans shall run at 100% RPM, unless something called an SDR file is custom-written. See:
Thermal Test Level:
Intel performs system level thermal testing of a given Intel Server Board in all listed 3rd party reference chassis. The server board is configured to use a generic fan control scheme which operates all attached system fans at 100% pulse width modulation (PWM). The generic fan control scheme is set by selecting the “OTHER CHASSIS” option using the FRUSDR Configuration Utility.
If info on creating an SDR file becomes available to me, it will be posted!
Also see this Intel forum for more information.
Windows 7 bluescreens when installing Firewire card
article #313, updated 2983 days ago
A friend brought this to my attention recently. He had tried at least three different PCI firewire cards in a new HP desktop, and all of them caused bluescreens when trying to boot after installation. We eventually tracked it down to a BIOS setting: something called “PCI SERR# Generation” in the BIOS, had to be turned off. After that, all went well.