Question about Philips Computers & Internet
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Posted on Jan 02, 2017
SOURCE: PDT-3100 lost program
I personally would give it a try ;-)
Since you can't do anything with it now, it wo'n't get worse anyway.
You would be surpised how many problems can be solved by logical thinking and acting without fear for failure.
Posted on Oct 29, 2008
If you have a VISTA DVD, please insert it, and use the BIOS to boot through your CD.
Then, when the VISTA installation comes up, press repair. Restart, and try again. Please report back.
Posted on Oct 29, 2008
I had the same problem...try this:
Right click on the Start file on the CD and choose the "Run as administrator" selection and it should work. Enjoy!
Posted on Jan 21, 2009
Tips for a great answer:
Mar 10, 2014 | Computers & Internet
In order to understand what a checksum error is, it is important to first learn what a checksum is. A checksum is a redundancy check during a computer's start up process, which makes sure that the computer's data is intact and unhampered. The data is scanned and tested for accuracy, either based on how well it relates to data elsewhere or based on previous data that was stored on the same computer. Essentially, all of the bits of data in a particular document or file are added up and a number or hash is created. This number or hash can then be compared to the number or hash generated from the same file on another person's computer or at a previous time on the same computer.
When does a Checksum Error Occur?
Although a checksum error can occur at any time while a computer is comparing data, it is most commonly present during a computer's startup procedure. During a computer's start up processes, the BIOS settings, which are stored in a CMOS memory chip, are computed and then checked against the previous value. If the computed values do not match exactly, the computer warns the user with a checksum error message that the data may have been changed or corrupted between start up cycles. All BIOS programs present a different error and therefore will either continue with booting or refuse to boot until the problem is corrected.
Depending on the type and the severity of the error generated, there may be one of a variety of ways to rectify the issue. The most common cause of a checksum error during the startup process is a faulty battery that is not providing sufficient power to the motherboard when the computer is off. However, motherboard malfunctions and viruses can also contribute to checksum errors.
Other Types of Checksum Errors
Another type of checksum error may occur with any program at any time. It is usual for many programs to now provide checksum information when that program is downloaded. Using a checksum program or MD5 hash checker, a user can quickly compare the checksum of a downloaded program with the checksum that the software developer provides. This is a common way to make sure that users are downloading the proper program and that no data was corrupted during the download process. Checksum errors originating from download errors can easily be corrected by re-downloading the problematic program.
if you have a windows disk you might try doing a repair from disk
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There are three special "Enable" pins on the EEPROM: CE (Chip Enable), OE (Output Enable), and WE (Write Enable). CE simply activates the chip (if CE is not enabled, the EEPROM will do nothing). OE makes the chip output a byte, and WE makes the chip program a byte into itself. When you are programming an EEPROM, you want to keep CE enabled the whole time, so tie CE low. (Because all three of these Enable signals are active-low; At least, they are on the 2865.) You also want to keep OE disabled the entire time, because you are not having the EEPROM output any bytes; Rather, you are programming bytes into it, so leave OE disabled: If it is active-low, tie it high to disable it. That leaves WE; Leave WE disabled for now.
The next thing you need to do is turn your EEPROM on. Connect its power pins to a power supply. (For the 2865 chip, that would be pins 14 and 28.)
The biggest step is to actually program the byte. First, configure the EEPROM's address and data buses to indicate the byte you would like to store, and the address you want to store it in. For example, to store the value 80 in the very first byte of the EEPROM (which is address 0), you'd tie all the address bus pins low (which means logical zero), so the address is set to 0. Then you'd set the data bus pins to the binary representation of 80, which is 01010000. Remember that bit numbers are read from right to left, not from left to right, so in this example, the first four data bus pins should be 0. (The second data bus pin should NOT be 1; Only the fifth and seventh will be 1.)
Once you have set up the address and data buses, the only thing left to do is cycle the WE pin to actually write the byte. Send WE low for a moment (assuming it is active-low), then put it high again. If the EEPROM is working properly, you have now stored your byte, and you can later examine it with OE. On the 2865 (and many other EEPROMs), there is a READY/BUSY pin, which is an output from the EEPROM which indicates when the chip has finished writing to itself and is ready to accept more input
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