I have a tower computer kind of older . when i plug in the microphone to the back i.e. microphone port, nothing happens to signal it reads the microphone and when i try to use the microphone for fruity loops mixer program it wont work. I get nothing from the microphone and nothing on the tower to suggest it even reads the microphone.

The Pre Out and PWR In for a method to insert an effects loop. The output signal from the Pre Out should be line level so you would not connect this to our microphone input on the PA, but preferably to a Line Level input otherwise you would overdrive the PA's input. When you connect the Pre Out, the 1/4" jack may interrupt the signal so you may lose output to the Champion's amplifier/speaker. If this happens, you need to have a return line with the same line level signal plugged into the AMP In to get your sound back on the amplifier itself.

With all your plugging in of unsuitable stuff into sockets not designed for them there is a very good chance you'll have blown parts of the mixer. It is apparent you have little idea of what an insert is or the difference between a line and a mic in (or between an in and an out for that matter) I would strongly suggest you stop playing and probably causing damage, read the manual from cover to cover, and if you don't understand it find someone who will help you. I'm sorry but you really are not helping yourself at the moment.

It seems you are getting confused by In and Insert. An insert is a plug where you can create a break in the audio chain and 'insert' something, normally an effect. This is why when you plug something into the insert socket you break the chain and lose the output. It is expecting the signal sent on the top to be returned on the ring when you plug it in and when nothing is plugged in the tip and ring on the socket are shorted. I am not quite sure what you are trying to do despite your detailed description but all you describe seems to be about right if you have got mixed up about inserts.

Hopefully if you are trying to insert something in the audio chain as I think you are and once you properly understand an unbalanced insert such as your unit has you'll be able to figure it out.

Do please stop plugging stuff in and half in that is not designed to be plugged in, or if you're unsure still don't plug it in, from what I can see you're really tempting fate and quite likely to break your unit with what you're doing at the moment.

This page has a download for a driver........ https://www.zoom-na.com/products/field-video-recording/field-recording/zoom-h1-handy-recorder

Also try a different cable....... Good Luck!

Very likely source of this problem is the "mixer out/amp in" jack on the back. Anything plugged in there breaks the signal path so, obviously any off board equipment plugged in there needs to be checked...but that jack itself could be faulty or even just dirty. If there is nothing plugged into it....you can get a phone plug (power off) and plug in and remove it a few times. This is a switching type jack so if the "switch" part of it isn't connecting with nothing plugged into it, the signal path would be broken and give you the results you've been having.

Instructions

1. • 1

     Place your mixer in a location that will allow you to hear the sound coming from the speakers clearly. The best placement is opposite the speakers, centered between the left and right pair. Connect the power supply to your mixer.
     

   • 2

     Connect the female end of an XLR cable to a microphone. Run the other end of the cable to your mixing board. Plug the male end into the "Mic" port of an open channel. These channels provide the preamps that will shape the sound characteristics of the microphone signal, processing them for output. Repeat the process for each microphone in your rig
     

     
     

   • 3

     Connect one end of a balanced 1/4-inch cable to the left channel jack labeled "L" found on the "Main Out" panel. Connect another cable to the right channel jack with the "R" label. Connect the opposite end of each cable to the matching left and right inputs on you amplifier.
     

   • 4

     Power on your mixer and amplifier. Test each microphone connected to the mixer for output.
     

   • 5

     Adjust the volume of each microphone channel to create a balanced mix. Use the "EQ" knobs to shape the tone and cut out frequencies that are causing squeal and feedback.
     

   
   Audi Performance Chip
   

Because of the presence of the buzzing, replace the filter caps out of hand because one is shorting out when it gets warm. Also check the audio transformers for excessive heat as well because one can take out the other.

Otherwise 2 strong possibilities- 1) if you have vacuum tubes/thermionic valves, one may be needing replacement due to it being gassy. These can sometimes lead to transformer windings breaking down too. If it is only one thatis causing the problem, replacing it should resolve it. If more than one are glowing purple- you have lost rectification, and AC is present where it should not be. This can be a cascade failure from a shorted filter capacitor.

The second strong possibility is actually a set of related issues. It could be a faulty solder joint or electrolytic capacitor. or even a faulty semiconductor, such as a transitor with an intermittent internal connection. If the amp has it's own issues with microphonics- locating the microphonic part should solve the fadeout as well.

There is really no way for a condenser mic to damage the board UNLESS you break the ground and get a static discharge into the input. That can happen with any microphone and has NOTHING to do with the phantom being on or off. As phantom power goes on and off slight bias at the input preamps can make amps non-linear causing the raspy sound you heard. The Phantom LED means NOTHING as it shows the state of the phantom switch by connecting a 12 volt source through a resistor to the LED... It shows NOTHING regarding the state of the 48 volt supply. Each input circuit has two 6.8Kohm resistors to the swinger of the phantom switch 2nd pole that either grounds those or connects them to a filtered 48 volt source. As long as you don't have a static buildup there is NO need to turn phantom power on or off while connecting a condenser microphone. At each input when using the XLR jacks are two per side 470pf capacitors for RF bypass. For the XLR's there is a 10Kohm between the signal lines and two series 10mfd/50 volt caps in series of each input to block the DC, when using phantom power, from reaching the preamp stage. These caps have to charge and discharge when changing the state of phantom power so you should AVOID having the main amps being driven while changing the state of any phantom power. Always have the fader(s) down and any monitors down to avoid a thump and also the non-linear raspy transition as the input caps charge/discharge. So fix the microphone... don't know what type you have, but DO check the cable (first) as ALL three conductors MUST be good for a condenser mic to work on phantom power. A ground leakage or noisy connection will cause your symptoms. Use a SHORT known good cable right at the board to test the mic. The 48 volts is applied through the two 6.8K resistors between both the signal lines to the shield of your XLR cable. The microphone picks off the 48 volts with a similar circuit.
Now let's cover a very important thing regarding system safety: ALL, and I do mean ALL interconnected equipment MUST be powered from the same source. Professionals run a power cord back to their mixer right alongside the snake. This is to avoid ground bounce damage due to bad building grounds or ground faults.

First, I could NOT find an MXL99 microphone... IF you have an MXL990 microphone, you can STOP trying to have the Alpha read it because it won't !!! The MXL990 is a condenser mic and requires that Phantom power be supplied to it and the Alpha does NOT have Phantom power.
I have found a common problem on the audio interface inout is having to GO INTO the windows Sounds and Devices and verifying that under the VOICE tab, checking that the inout device is listed AND then checking the volume is turned up in that window... It seems like you have to verify everything and tweek a dozen places to get everything right to work. Having to look under the "VOICE" tab is not a good description of where the Alpha input control should be... so anyway, check that as well as it is not MUTED in that window. With Adobe Audition, make sure you set under the options, the "metering" to monitor the input recording level.

It may be your old computer was running XP operating system and your new one Win7... There is a lot of incompatibility with different operating systems. You can try searching for a compatibile driver. If you cannot find one, the best thing might be to back-step to your old compatible OS and driver.